Brad Hansen Posted November 26, 2012 Report Share Posted November 26, 2012 currently i have a 13B running sequential staged injection with 2x 650cc primary injectors and 2x 2200cc secondary injectors. In the future i would like to convert the motor to a semi peripheral port setup which would utilise the 2x 650cc primary injectors and the 2x2200cc secondary injectors but would also incorporate another 2x 2200cc secondary injectors. to do this would i have to change my setup to group fire staged injection and rewire my setup so that its as follows?: Front rotor(1): Primary - inj1; Sec1 - inj2; Sec2 - inj4. Rear rotor(2): Primary - inj3; Sec1 - inj6; Sec2 - inj8. If this is the case would i notice any difference to performance/smoothness? Brad. Quote Link to comment Share on other sites More sharing options...
Simon Posted November 27, 2012 Report Share Posted November 27, 2012 Hi Brad Which ECU are you running on? Im thinking Xtreme as you mention 8 injector drives. If you do have the Xtreme you have the option of using aux injection or having two injectors off the secondary drives. Aux injection lets you run a ms based duty cycle off injector drives 5-8 so you can faze in a 3rd set. Quote Link to comment Share on other sites More sharing options...
Brad Hansen Posted November 27, 2012 Author Report Share Posted November 27, 2012 hey simon, yes im running the red xtreme ecu; since i will most likely need to change up my harness a bit i might convert my water/methanol injection to a pwm setup controlled by the ecu (uses 2x solenoids with different sized nozzles) as well as run an extra secondary set of injectors off the spare inj outputs; only thing is this could bring me close to table allocation. theres not a way that i can drive two injectors off the one output so they operate simultaneously? and just adjust the secondary ratio to suit. Quote Link to comment Share on other sites More sharing options...
Simon Posted November 27, 2012 Report Share Posted November 27, 2012 That can be done very easy. With high impedance injectors you can run two injectors off a drive in parallel. So no problems to have four secondary injectors. Quote Link to comment Share on other sites More sharing options...
Brad Hansen Posted November 27, 2012 Author Report Share Posted November 27, 2012 Simon that sounds like it will be the easier option as my injectors are high impedence style and that will make tuning much easier as I so t have to edit two tables and try to get them to match up and the ecu can still utilise the auto tune feature that way. thanks! brad. Quote Link to comment Share on other sites More sharing options...
Lee Ameralik Posted December 30, 2012 Report Share Posted December 30, 2012 Would this still apply to a G4 RX? Running 2x 1000cc primaries and have a lower intake manifold with 4 injector ports (will be running 4x1000cc) all High Impedance. . . Thanks, Lee A. Quote Link to comment Share on other sites More sharing options...
Simon Posted January 9, 2013 Report Share Posted January 9, 2013 Same on the RX Quote Link to comment Share on other sites More sharing options...
ayp77 Posted January 31, 2018 Report Share Posted January 31, 2018 Hi, I have a similar situation that I am running 2x725 and 2x2200 injectors, planning to add 2 more 2200 injectors to the secondary rail. I am using the G4+ plugin ecu, if I run 2 2200 injectors off a drive in parallel. Do I need to change the injector dead time, short pulse adder table? I understand I need to double the injector amount to 4400cc. Thanks Quote Link to comment Share on other sites More sharing options...
Simon Posted February 1, 2018 Report Share Posted February 1, 2018 Yep just a case of adjusting the staging figures to suit the changed ratio. Quote Link to comment Share on other sites More sharing options...
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